Spindle Assembly AM144424 AUC13151 for John Deere Z720E Z730M Z735M Z740R Z760R

Aftermarket mower deck spindle assembly replacing John Deere AM144424 and AUC13151. This supplier-cross-referenced replacement is used on select John Deere 54-inch High-Capacity and PRO mower deck applications, along with additional deck configurations listed below.

John Deere used multiple spindle assemblies across these mower families. Confirm the original spindle number, deck parts diagram, mounting pattern and measurements before ordering.

Primary 54-Inch Deck Applications

• John Deere Q820E QuikTrak
• John Deere Z720E Mid-Duty ZTrak
• John Deere Z730M Mid-Duty ZTrak
• John Deere Z735M Mid-Duty ZTrak
• John Deere Z740R Mid-Duty ZTrak
• John Deere Z760R Mid-Duty ZTrak

For these applications, verify that the 54-inch deck parts diagram calls for AUC13151.

Additional AM144424 Applications

• ZTrak and EZtrak: Z530R, Z535R, Z540R, Z545R, Z625 and Z655
• X Series: X710, X730, X734, X738, X739, X750, X754, X758, X940, X948 and X949
• Commercial walk-behind mowers: W36M, W36R and W52R
• Compact tractors: 1023E, 1025R, 2025R and 2026R with applicable mower decks
• Deck applications: Select 54D, 60D, 62 and 72D mower deck or material collection system configurations

Confirm that the applicable deck diagram specifies AM144424. Tractor or mower model alone is not enough to establish fitment.

Supplier Cross-Reference Numbers

• John Deere AM144424
• John Deere AUC13151

Important: AM144424 and AUC13151 remain separate John Deere catalog numbers. The aftermarket supplier lists this spindle assembly as a replacement for both application paths.

Supplier-Provided Measurements

• Overall height: 6.33 inches (161 mm)
• Outside diameter: 10.11 inches (257 mm)
• Mounting-hole distance: 7.00 inches (178 mm)

What You Receive

• Quantity: 1 aftermarket mower deck spindle assembly

Blade, mounting hardware and other deck components are not included unless specifically shown with the product.

Legacy Model Warning

The supplier also references certain John Deere 120, 140, 300, 312, 314, 316, 317, 318, 322, 330, 332, 425, 445 and 455 deck configurations. These older machines used multiple mower decks and spindle assemblies. Order for these models only when the deck parts diagram specifically calls for AM144424 or AUC13151 and the measurements match.